DE301002C - - Google Patents
Info
- Publication number
- DE301002C DE301002C DENDAT301002D DE301002DA DE301002C DE 301002 C DE301002 C DE 301002C DE NDAT301002 D DENDAT301002 D DE NDAT301002D DE 301002D A DE301002D A DE 301002DA DE 301002 C DE301002 C DE 301002C
- Authority
- DE
- Germany
- Prior art keywords
- sheet
- metal
- sheet metal
- edges
- joint
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000002184 metal Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 210000001503 Joints Anatomy 0.000 description 5
- 238000003466 welding Methods 0.000 description 2
- 239000000969 carrier Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000003313 weakening Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/16—Making tubes with varying diameter in longitudinal direction
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
PATENTSCHRIFTPATENT LETTERING
KLASSE 7b. GRUPPECLASS 7b. GROUP
Patentiert im Deutschen Reiche vom 30. Juli 1914 ab.Patented in the German Empire on July 30, 1914.
Im Flugzeugbau spielt das Gewicht eine sehr große Rolle, und es müssen infolgedessen in noch höherem Maße als bei anderen Industrien alle Bauteile möglichst als Träger gleicher Festigkeit ausgebildet werden. Bei stangenförmigen Hohlkörpern, die auf Biegung oder Knickung beansprucht werden, ist daher die Zylinderform grundsätzlich falsch. Vielmehr müssen sie von der Mitte aus in beiden Querschnittsabmessungen nach den Enden zu abnehmen. Bisher haben sich solche stangenförmige Hohlkörper nicht genügend einfach herstellen lassen. Die bekannte Herstellung aus zwei Schalenhälften, die miteinander verschweißt werden, hat den Nachteil, daß das so gebildete Rohr an zwei Stellen die Schwächung erfährt, die mit der autogenen Schweißung verbunden ist. Das Verfahren nach der vorliegenden Erfindung ermöglicht es, solche Rohre mit einer einzigen Stoßfuge herzustellen, und zwar dadurch, daß eine ebene Blechtafel von der Gestalt eines Bogenzweiecks mit abgestumpften Ecken um einen stangenförmigen Kern herumgebogen wird, bis die freien Ränder der Blechtafeln einander berühren, darauf die Schablone zwischen den. auseinanderfedernden Blechrändern herausgehoben und nach dem Wiederzusammenfedern die Fuge verschweißt wird.In aircraft construction, weight plays a very important role, and consequently it must to an even greater extent than in other industries, all components, if possible as carriers, are the same Strength can be formed. With rod-shaped hollow bodies that are bent or Buckling are claimed, the cylinder shape is therefore fundamentally wrong. Much more they have to decrease from the middle in both cross-sectional dimensions towards the ends. Up to now, such rod-shaped hollow bodies have not been able to be produced in a sufficiently simple manner. The well-known manufacture consisting of two shell halves that are welded together has the disadvantage that the The tube formed in this way experiences the weakening in two places, which is the case with the oxy-fuel weld connected is. The method according to the present invention makes it possible to produce such pipes to produce with a single butt joint, namely that a flat sheet of the shape of an arched triangle with truncated corners around a rod-shaped one Core is bent around until the free edges of the sheet metal touch each other, then the template between the. springing apart sheet metal edges lifted out and after the joint is welded when it springs back together.
Das Verfahren nach der vorliegenden Erfindung ist auf der Zeichnung in drei Figuren dargestellt.The method according to the present invention is shown in the drawing in three figures shown.
Fig. ι zeigt ein abgewickeltes Blech;Fig. Ι shows a developed sheet;
Fig. 2 zeigt ein Rohr im Längsschnitt;Fig. 2 shows a pipe in longitudinal section;
Fig· 3 zeigt zwei Querschnitte des Rohres.Figure 3 shows two cross sections of the tube.
Gemäß dem' Verfahren wird zuerst eine Blechtafel von der Gestalt eines Bogenzweiecks ι um einen Kern 2 herumgelegt, so daß sich die" freien Enden des Bleches in einer einzigen Stoßfuge berühren. Sodann wird die Schablone in der durch die Längsachse des Rohres und die Stoßfuge bestimmten Ebene durch die erweiterte Stoßfuge herausgehoben, worauf die Enden des Bleches wieder zurückschnappen und das Rohr nunmehr durch Verschweißen der Stoßfuge fertiggestellt wird.According to the method, a sheet metal sheet in the shape of an arched triangle is first made ι placed around a core 2, so that the "free ends of the sheet in a touch a single butt joint. Then the template is in the by the longitudinal axis of the The pipe and the butt joint are lifted out through the extended butt joint, whereupon the ends of the sheet snap back and the tube is now welded the butt joint is completed.
Das Verfahren nach der vorliegenden Erfindung hat noch den weiteren Vorteil, daß durch die Wahl der Schweißfuge an der gekrümmten Seite (Fig. 2) infolge des Schweiß-Vorganges die gerade Seite sich in der aus den punktierten Linien ersichtlichen Weise auskrümmt, wodurch das Widerstandsmoment günstig beeinflußt wird.The method according to the present invention has the further advantage that by choosing the welding joint on the curved side (Fig. 2) as a result of the welding process the straight side bends in the manner shown by the dotted lines, creating the section modulus is favorably influenced.
Claims (1)
Publications (1)
Publication Number | Publication Date |
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DE301002C true DE301002C (en) |
Family
ID=554934
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DENDAT301002D Active DE301002C (en) |
Country Status (1)
Country | Link |
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DE (1) | DE301002C (en) |
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0
- DE DENDAT301002D patent/DE301002C/de active Active
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